Mechanism for hoisting and transferring loads.



PATENTED AUG. 16, 1904. c. A. MORRIS. v MECHANISM FOR HOISTING ANDTRANSFERRING LOADS.

APPLICATION FILED SEPT. 5, 1903.

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No. 768,016." v PATENTED AUG. 16, 190 0. A. MORRIS.

MECHANISM FOR .HOISTING AND TRANSFERRING LOADS.

APPLICATION FILED SEPTA 1903.

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' W I TN 8358: QYZJWTS INVENT0I? I v YB) a I ATTORNEY UNITED STATESPatented August 16, 1904.

PATENT OFFICE.

CHARLES A. MORRIS, OF GLENBIDGE, NE'VV JERSEY.

IV|ECHANISM FOR HOI STING AND TRANSFERRING LOADS. I

SPECIFICATION forming part of Letters Patent No. 768,016, dated August16, 1904. Application filed September 5, 1903. SerialNo. 172,055. (Nomodel.)

To all whom, it may concern:

ridge, in the county of Essex and State of NewJersey.have inventedcertain new and useful Improvements in Mechanlsms for Hoisting andTransferringLoads, of which the fol I lowing is a specificat1on.

This invention relates to the class of devices employed for elevating aload,'transferr1ng it to another p0int,.and discharging it, employ ingfor this purpose atrackwa'y, a trolley on the track, andhoisting means,such as a rope and drum; and the object of the invention 1S3 to providea means whereby the movement of? the trolley along its track with theload to be transferred lifts a weight, and thus stores up power toreturn the trolley to the receiving point after the" load is discharged.

In the accompanying drawings. which illustrate several embodiments ofthe invention, Figure 1 is a somewhat diagrammatic general viewillustrating the invention as applied to a trolley running on a fixedtrack-beam and provided with a rolling counterweight for the trolley.Fig. 2 is a detail view of the trolley on a larger scale. Fig. 3 isadetail plan view of the drums, the brake device, and the rolling weighton a larger scale. Fig. 4 is a general view illustrating a form of theinvention where a radially-swinging weight is employed to return thetrolley. This view is also some what diagrammatic.

' Referring primarily to Fig. 1, A designates a structure having in itbelow a track Tfor a receiving-car C and a projecting fixed trackbeam 1,supported by a guy 2. On the trackbeam runs a,trolley 3, (seen in detailin Fig. 2,) which is coupled to the end of a rope L, passing about aguide-sheave 5 at the outer end of the beam and back to a drum 6 on thestructure A, about which drum it is wound.

On a reduced part 6 of the drum 6 is wound,

in the opposite direction to the rope 4:, a rope 4:, to which is secureda rolling weight 7 on a downwardly-curved track 8 in the structure A. Inthe structure A is a hoisting-drum P. from which a rope 9 extends upover a guidesheave l0, thence down and over a sheave 11 in the trolley,and thence down to the point where the load L is secured thereto. In thedrawings the load is represented as a dredg-' ing-bucket, adapted to beoperated and controlled by a cord 12 in a \vell-known way.

' There is a brake on the drums 6 6 to be controlled by the hoistingengineer, and this brake (seen in plan in Fig. 3) may comprise abrake-wheel 13, connected with the drums, a strap 14; about said wheel,and a lever 15 coupled to'the said strap and provided with anoperating-rope 16. This form of brake is well known and will require nospecial description. Indeed,any good form of brake will serve thepurpose of putting a check on the too-rapid rotation of the drums. Therolling weight may roll between guides 17, Fig.

3, along the track.

The operation is substantially as follows: Suppose the bucket has beenlowered and has received its load and that the rolling weight 7 is atthe lower end of its track. The engineer sets the. brake on the wheel 13and sets in motion the hoisting-drum P. The bucket rises with its load Lto the proper height and the engineer slackens the brake, but keeps thehoisting-drum going. The effect is to run the trolley 3 and load L intothe dumping position seen in dotted lines,the rope I unwinding from thedrum 6 and the rope d winding up on the drum 6*, thus drawing the weight7 up over the convex inclined track 8. The'engineer now stops thehoisting-drum, sets the brake, and dumps the load from the bucket. Henow slackens the hoisting-rope, and the brake and the weight 7 descends.drawing the trolley 3 ley carrying the empty bucket with it.

' The object in making the track 8 convex is to equalize the effect ofthe weight 7 on the trolley with the effect of the hoisting-rope 9thereon. It will be noted that when the trolley is at the outer end ofthe track-beam the power applied through the rope 9 to move the trolleyinward is most effective, and this effectiveness is gradually reduced asthe trolley moves inward, and it will also 'be noted that the resistanceolfered by the weight 7 to the movement of the trolley inward on the 8 5out again to the end of the track-beam,the troltrack-beam is also mosteffective, owing to the shape of the track 8, when the trolley is at theouter end of the said beam.

in the construction seen in Fig. 4c a wire rope stretched between twostructures A A serves as a track 1 for a trolley 3. From thehoisting-drum P a hoisting-rope 9 extends over a sheave on thestructure, thence to the trolley, and thence over the sheave 11 on thetrolley down through a tackle tto the load L. The tackle is notessential to this invention. The trolley is coupled to a rope 4:, whichwinds on a drum 6 on the structure A while a rope 4 winds on a lesserdrum 6 and is coupled to a weight 7 on an arm 8, pivotally connected tothe structure A at y. Connected with the drums 6 and 6 is a brakewheel13, embraced by a strap l4, operated by a lever and rope 16. The drumsand brake device are the same as those seen in Figs. 1 and 3. Theoperation is the same as that with the form of the mechanism alreadydescribed except that the weight 7 does not roll on a track, but movesin a curved path about the point y, the arm 8 swinging radially.Obviously the track l might be a rigid beam instead of a rope.

Having thus described my invention, I claim 1. Means for the purposespecified, comprising a trolley-track, a trolley movable therealong, ahoisting means including a rope which plays over a sheave on the trolleyand thereby moves the trolley and load along the track to thedischarging-point, a weight independent of the trolley-track, twoconnected drums rotatively mounted, a rope connecting one ol said drumswith the trolley, a rope connecting the other of said drums with saidweight, and a brake which controls the rotation 01 said drums.

2. Means for the purpose specified, comprising a trolley-track,a trolleymovable therealong, a hoisting means includinga rope which plays over asheave on the trolley and thereby moves the trolley and load along thetrack to the discharging-point, a downwardlycurved track 8, a weight 7which moves up and down over said track, drums (5 and (3", a ropeconnecting the drum 6 with the trolley, a rope which connects the drum(5 with the weight, and a brake which controls the rotation of saiddrums.

In witness whereof I have hereunto signed my name this 6th day ofAugust, 1903, in the presence of two subscribing witnesses.

CHARLES A. M ()hlt l b.

Witnesses:

BENJAMIN H. HOLT, WVILLIAM J. FIRTH.

